JD Hammer
P | Bats/Throws: R/R | 6' 3" 202LBS | Age: 29
Draft: 2016 | Rd: 24, #710, Colorado Rockies | Marshall
W L ERA G GS SV IP SO WHIP
2019 1 0 3.79 20 0 0 19 13 1.42
2021 1 1 4.95 20 0 0 20 22 1.60
2 Seasons 2 1 4.38 40 0 0 39 35 1.51
G W-L ERA IP SO WHIP
2019 20 1-0 3.79 19 13 1.42
2021 20 1-1 4.95 20 22 1.60
2 Seasons 40 2-1 4.38 39 35 1.51
MLB Percentile Rankings
Pitch Distribution

Statcast Statistics

Season Age Pitches Batted
Balls
Barrels Barrel % Barrel/PA Exit
Velocity
Max EV Launch
Angle
Sweet
Spot %
XBA XSLG WOBA XWOBA XWOBACON HardHit% K% BB% ERA xERA
2019 24 338 56 4 7.1 4.9 89.5 111.3 16.8 39.3 .284 .479 .315 .377 .392 33.9 15.9 15.9 3.79 6.61
2021 26 405 59 3 5.1 3.2 92.0 110.3 15.1 28.8 .226 .345 .336 .302 .335 50.8 23.4 11.7 4.95 3.84
Player 743 115 7 6.1 4.0 90.8 111.3 16.0 33.9 .253 .406 .327 .337 .362 42.6 19.9 13.6
MLB 6.9 4.7 88.4 122.4 12.2 33.1 .245 .406 .316 .315 .369 36.3 22.1 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Hammer relies on 4 pitches.
Four Seamer
(59.3%) ,
Slider
(37.3%) ,
Sinker
(2.2%) ,
Curveball
(1.2%) ,


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Pitch Tracking



Batted Ball Profile

Season GB % FB % LD % PU % Pull % Straight % Oppo % Weak % Topped % Under % Flare/Burner % Solid % Barrel % Barrel/PA
2019 41.1 23.2 28.6 7.1 25.0 46.4 28.6 1.8 28.6 26.8 28.6 7.1 7.1 4.9
2021 42.4 23.7 23.7 10.2 37.3 35.6 27.1 1.7 33.9 23.7 28.8 6.8 5.1 3.2
Player 41.7 23.5 26.1 8.7 31.3 40.9 27.8 1.7 31.3 25.2 28.7 7.0 6.1 4.0
MLB 44.6 23.5 24.9 7.0 37.0 37.6 25.3 3.9 32.9 24.7 24.4 5.8 6.9 4.7
! Note: All figures in this table cover the period 2015-present.

Pitch Movement


How this works: Every pitch is affected by the forces of gravity, which means that every pitch drops on its way from the mound to the plate. These numbers are reported with gravity, which makes them larger and different than other pitch movement numbers you may have seen. Since gravity requires time, and slower pitches aren’t ‘better’ just because they have more time to move, the movement of a pitch is compared to ‘average’ movement by comparing it to other MLB pitch types within +/- 2 MPH and from within +/- 0.5 feet of extension and release.
Vertical Movement (inches) Horizontal Movement (inches)
Year Pitch Team Hand # MPH Inches of Drop vs Avg % vs Avg Inches of Break vs Avg % Break vs Avg
2021 Slider PHI R 151 82.9 43.1 4.4 11 4.2 -2.0 -33
2021 Sinker PHI R 9 94.3 15.7 -5.3 -25 15.9 1.0 7
2021 Curveball PHI R 5 75.7 61.3 2.0 3 8.8 -0.9 -9
2021 4-Seam Fastball PHI R 240 94.0 14.5 0.3 2 11.2 4.0 56
2019 Slider PHI R 153 84.5 39.1 1.5 4 3.9 -0.9 -18
2019 4-Seam Fastball PHI R 185 94.4 14.8 0.5 4 10.3 2.8 37
! Note: Years are in reverse order.
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Run Values by Pitch Type

Year Pitch Type Team RV/100 Run Value Pitches % PA BA SLG wOBA Whiff% K% PutAway % xBA xSLG xwOBA Hard Hit %
2021 4-Seam Fastball -1.4 -3 240 59.3 55 .283 .522 .400 20.6 20.0 15.1 .253 .430 .356 60.0
2021 Slider -0.8 -1 151 37.3 36 .212 .242 .268 30.4 27.8 18.2 .189 .230 .226 39.1
2021 Sinker -1.8 0 9 2.2 2 .500 .500 .450 33.3 50.0 100.0 .240 .276 .223 0.0
2021 Curveball -0.1 0 5 1.2 -- -- -- 50.0 -- 0.0 -- -- -- --
2019 4-Seam Fastball -1.0 -2 185 54.7 42 .250 .500 .406 19.5 14.3 11.3 .322 .537 .438 46.2
2019 Slider 1.2 2 153 45.3 40 .189 .270 .238 22.9 17.5 14.0 .250 .429 .315 23.3
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.
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Spin Direction

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2021 4-Seam Fastball 239 94.0 99 19.8 1:30 1:15 15
2021 Slider 149 82.9 30 7.2 8:30 7:30 60
! Note: This table is showing data from the PITCHER perspective.
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Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2019 82 338 1 5 -4 -2 0
2021 93 405 -2 6 -4 -5 -5
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Plate Discipline

Season Pitches Zone % Zone Swing % Zone Contact % Chase % Chase Contact % Edge % 1st Pitch Strike % Swing % Whiff % Meatball % Meatball Swing %
2019 338 46.4 71.3 81.3 19.3 68.6 41.7 62.2 43.5 21.1 6.2 81.0
2021 405 49.4 61.0 80.3 22.4 63.0 45.7 57.0 41.5 24.4 6.7 66.7
Player 743 48.0 65.5 80.8 21.0 65.4 43.9 59.4 42.4 22.9 6.5 72.9
MLB 48.6 67.0 82.0 28.5 58.0 42.6 60.9 47.1 24.8 7.3 76.1
! Note: All figures in this table cover the period 2015-present.

Percentile Rankings

Year xwOBA /
xERA
xBA xSLG xISO xOBP Brl Brl% EV Hard
Hit%
K% BB% Whiff% Chase
Rate
FB
Velo
FB
Spin
CB
Spin
Extension
2019 70 46 31
2021 60 68 22
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Expected Home Runs

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %
2019 22.9 2 2.1 0 3 2 0 0.0
2021 23.0 3 1.9 1 0 2 1 33.3
Player 22.9 5 4.0 1 3 4 1 20.0

Expected Home Runs by Park

Year HR
2019 2 2 2 3 2 2 2 2 2 1 2 2 4 2 2 2 1 2 2 2 2 3 3 2 0 2 2 3 4 2 1
2021 3 3 1 1 3 1 3 1 1 1 1 2 1 1 1 3 1 1 3 3 1 3 3 3 1 1 3 3 2 3 3
Player 5 5 3 4 5 3 5 3 3 2 3 4 5 3 3 5 2 3 5 5 3 6 6 5 1 3 5 6 6 5 4
! Note: This tells how many of this player's home runs would have been out of other stadiums. This accounts for different wall heights, distances and environmental effects. For these purposes, the 2020 Blue Jays home field was still Rogers Centre, not Sahlen Field.
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2019 Shifts 82 .315 54 1 1.9 28 15 53.6
2021 Shifts 93 .336 47 5 10.6 46 9 19.6
! Note: Shifts are through the 2022 season, Shaded starting from the 2023 season, Shift: three or more infielders are on the same side of second base, Shade: positioned outside of their typical responsible slices of the field.
Learn more about how positioning is defined here

Pitch Tempo

Bases EmptyRunners On Base
SeasonTeamPitchesTempoFast %Slow %PitchesTempoFast %Slow %
2019 106 19.4 6.6% 0.9% 59 23.8 0.0% 10.2%
2021 100 20.0 2.0% 1.0% 115 24.7 0.0% 13.0%
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Pitch Distribution